Removable IED Cradle With Tamper-Sealed Waterproof Switchboard Case
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Solution Overview
Problem
Existing intelligent electronic devices (IEDs) for monitoring and managing electrical energy lack a secure and waterproof enclosure solution that allows for easy installation and maintenance while preventing tampering and ensuring reliable operation in outdoor environments.
Innovation Solution
A metering assembly comprising a switchboard case with a removable cradle and a sealing cover that provides electrical connections, a sealing mechanism to prevent tampering, and a water-tight design using gaskets and a connection paddle for secure electrical coupling, enabling easy installation and maintenance while ensuring the IED's secure operation in outdoor conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure and waterproof enclosure is provided for IEDs, then reliability and protection from environmental factors is improved, but device complexity and installation difficulty increases
Solution Approach 1:
The enclosure is divided into modular components including a removable cradle, main enclosure body, and separate cover assembly. This segmentation allows the IED to be installed and maintained by simply replacing the cradle module without disassembling the entire waterproof enclosure, thus maintaining reliability while reducing installation complexity
Solution Approach 2:
A connection paddle serves as an intermediary component that electrically couples the cradle to the enclosure. This mediator allows for easy disconnection and replacement of the cradle while maintaining the integrity of the waterproof seal, resolving the contradiction between ease of maintenance and enclosure security
2Ease of operation
If a removable cradle is used for easy installation and maintenance, then ease of operation is improved, but security and tamper prevention capability deteriorates
Solution Approach 1:
A gasket seal acts as a flexible barrier between the removable cradle and the fixed enclosure. This flexible seal maintains the waterproof and tamper-proof integrity of the enclosure even when the cradle is repeatedly removed and reinstalled, thus preserving security while enabling easy operation
Solution Approach 2:
The connection paddle serves as a mediator that provides electrical connectivity while being easily detachable. This intermediary component allows maintenance personnel to remove the cradle for servicing without compromising the security of the main enclosure, as the paddle can be cleanly disconnected and reconnected
3Reliability
If a tamper-proof sealing mechanism is implemented, then security is improved, but ease of repair deteriorates
Solution Approach 1:
The sealing system is segmented into a reusable gasket and a tamper-evident cover mechanism. The gasket can be repeatedly compressed and released during normal maintenance operations, while the cover's tamper-evident features only trigger upon unauthorized attempts, thus maintaining both security and ease of legitimate repair
Solution Approach 2:
The sealing mechanism is designed so that proper installation and maintenance operations naturally reinforce the seal, while tampering attempts automatically compromise it. This inverted approach means that ease of repair through proper channels does not weaken security, and security mechanisms do not hinder legitimate maintenance
4Object-affected harmful factors
If a waterproof enclosure with gaskets is used for outdoor applications, then protection from environmental factors is improved, but device complexity and manufacturing difficulty increases
Solution Approach 1:
The waterproofing function is segmented into discrete gasket components rather than requiring a fully sealed monolithic enclosure. This allows the gaskets to be independently manufactured and installed in modular sections, simplifying the manufacturing process while maintaining effective protection against environmental factors
Solution Approach 2:
Flexible gasket materials are used to create waterproof seals that can be easily molded and installed. These thin film-like seals provide effective environmental protection while being simple to manufacture and install compared to rigid waterproof structures
Data Source
AI summary
A metering assembly, switchboard case, adapter cradle and method of use are provided. A metering assembly of the present disclosure includes an intelligent electronic device (IED) disposed in a switchboard case. The switchboard case includes an enclosure which is connected to an electrical distribution system and a cover. The IED is mounted in a cradle which is removable from the enclosure. The cradle, or adaptor, interconnects electronics of the IED with an electrical circuit of the electrical distribution system. The cover includes a sealing mechanism which prevents removal of the cover and indicates when the cover has been tampered with. The cover further includes a sealed input/output interface which interconnects with input/output means of the IED disposed with the switchboard case. The enclosure and/or the cover have a gasket to seal the cover to the enclosure to making the switchboard case water-tight and enabled for used in outdoor applications.